All items tagged with Test Bench (287)
Test Bench: The SB Acoustics SB29BNC-C000-4 Tweeter
June 5, 2019 by Vance Dickason

Test Bench: The SB Acoustics SB29BNC-C000-4 Tweeter

This month I am characterizing the SB29BNC beryllium 29 mm dome tweeter from SB Acoustics. This is the second high-end 29 mm beryllium diaphragm neodymium dome sent by SB Acoustics for Test Bench. Features for this transducer include a small format 72 mm diameter injection-molded plastic faceplate, and an 8 mm wide coated cloth surround. This article was published in Voice Coil, March 2019.
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Test Bench: A New Beryllium Tweeter from BlieSMa
May 23, 2019 by Vance Dickason

Test Bench: A New Beryllium Tweeter from BlieSMa

This Test Bench characterizes the T34B-4 34mm beryllium dome tweeter from BlieSMa, a German company founded in 2018 by Stas Malikov. BlieSMa’s first tweeter offering, the T34A-4 34 mm aluminum/magnesium alloy dome, appeared in Voice Coil’s June 2018 Test Bench. This month, I received the company’s second offering, and it seems logical that this driver, the T34B-4, is a 34 mm beryllium dome tweeter. This article was published in Voice Coil, March 2019.
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Test Bench: Bold North Audio MS-10W - A Legendary 6.5" Woofer from MISCO
May 6, 2019 by Vance Dickason

Test Bench: Bold North Audio MS-10W - A Legendary 6.5" Woofer from MISCO

For this Test Bench, Vance Dickason actually had lots of fun characterizing a new version of a legendary 6.5” woofer recently announced by MISCO (Minneapolis Speaker Company). The new MS-10W, will be marketed under the new MISCO brand, Bold North Audio, and it is effectively a direct replacement for the famous white driver on Yamaha’s NS10 studio monitors! This article was originally published in Voice Coil, February 2019.
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Test Bench: Eminence SD28 Soft Dome Tweeter
April 17, 2019 by Vance Dickason

Test Bench: Eminence SD28 Soft Dome Tweeter

Being primarily known as a pro sound driver OEM, with a great reputation for both guitar speakers and PA drivers, it may come as a surprise that this Eminence driver, the SD28, is a 1” soft dome tweeter — a staple of the home and car audio businesses. I should note however, that while Eminence has a rather large catalog of pro audio transducers, the company also produces drivers for home and car audio companies. This article was originally published in Voice Coil, January 2019
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Test Bench: Radian Audio Engineering 475PB 1-Inch Compression Driver
April 10, 2019 by Vance Dickason

Test Bench: Radian Audio Engineering 475PB 1-Inch Compression Driver

In this Test Bench I characterized the 475PB, a 1" compression driver from Radian Audio Engineering. The 475PB has a similar set of features as Radian’s 745PB. This includes a 1” throat diameter, a 134 mm × 19 mm ferrite magnet motor, and the most important feature—a proprietary processed and hardened aerospace-grade aluminum alloy diaphragm over a three-slit phase plug. This article was originally published in Voice Coil, January 2019.
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Test Bench: Radian Audio Engineering 745PB 1.4” Compression Driver
March 27, 2019 by Vance Dickason

Test Bench: Radian Audio Engineering 745PB 1.4” Compression Driver

In this Test Bench I characterized the 745PB 1.4” compression driver from Radian Audio Engineering. Based in Orange, CA, Radian is a serious player in the OEM loudspeaker component business, the sound contractor/fixed installation market, and the portable/tour sound industry. The 745PB has the expected rich feature set of other Radian compression drivers. Subjectively, this speaker is incredibly musical, detailed, and extremely easy to listen to — certainly a goal for all monitors. This article was originally published in Voice Coil, December 2018.
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Test Bench: Celestion CDX14-2420 1.4” Compression Driver
March 20, 2019 by Vance Dickason

Test Bench: Celestion CDX14-2420 1.4” Compression Driver

In this Test Bench I characterized the CDX14-2420 1.4” compression driver from UK Pro Sound OEM manufacturer Celestion. Designed for use with 1.4” throat horns, the CDX14-2420 has a 35.6 mm (1.4”) throat diameter driven by a 60 mm (2.4”) diameter voice coil wound with edgewound copper-clad aluminum wire (CCAW) on a high-temperature fiberglass non-conducting former, which drives a deep-drawn titanium diaphragm and polyimide surround. This article was originally published in Voice Coil, December 2018.
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Test Bench: Eighteen Sound ND4015BE Beryllium Compression Driver
March 13, 2019 by Vance Dickason

Test Bench: Eighteen Sound ND4015BE Beryllium Compression Driver

This Test Bench examines Eighteen Sound's ND4015BE beryllium compression driver, which was mated to an Eighteen Sound XR2064 60° × 40° horn. This compression driver is available in two versions, a 1.5" throat and a 2" throat. This review focuses on the 2" throat model. The ND4015BE has a 4”-diameter edge-wound aluminum voice coil on a nonconducting Nomex former, a 4" pure beryllium diaphragm with a polymer surround. This article was originally published in Voice Coil, February 2014.
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Test Bench: Celestion AN2075 2" Full-Range Compact Array Driver
March 7, 2019 by Vance Dickason

Test Bench: Celestion AN2075 2" Full-Range Compact Array Driver

The Celestion AN2075 has a 2”-diameter aluminum cone neodymium motor full-range transducer primarily intended for use in line source arrays. The AN2075 is built on a proprietary six-spoke molded-glass reinforced ABS frame. The cone assembly consists of a black anodized aluminum cone with a 19-mm diameter aluminum dust cap and whizzer-type extension. This article was originally published in Voice Coil, February 2014.
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Test Bench: SEAS Excel T35C002 Dome Midrange Tweeter
February 27, 2019 by Vance Dickason

Test Bench: SEAS Excel T35C002 Dome Midrange Tweeter

This month’s Test Bench driver is the T35C002 1.5” tweeter from Norwegian high-end home audio manufacturer SEAS’s home audio driver Excel line. The T35C002 is basically an Excel line version of the company’s Exotic line T35 Alnico V tweeter, but it uses a neodymium magnet, with a 1.5” coated cloth diaphragm sourced from German high-end diaphragm manufacturer Dr. Kurt Muller (DKM). This article was originally published in Voice Coil, April 2014.
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